This feature is usually on the motherboard which detects fan’s speed and CPU temp. In most motherboards, it the fan runs too slow it will generate a warning and in almost all motherboards computers shuts itself down when CPU temp ran too high.

This is not entirely true. The motherboard can only report the temperature of the processor and the speed/state of the fans. If the fans are malfunctioning, usually during boot it will warn you, but Windows XP does not have the same functionality as described above.

I work at a computer repair shop and, believe me, if it did have this functionality we wouldnt be so busy

No nix system out of the box will monitor cpu temps you have to have lmsensors installed and configured for that. Thank your systems BIOs for that save. Most boards actually have software that monitors the motherboards temps and fan speeds and will shut down or warn you also, and believe me as much as I would rather be running fedora or kubuntu those utilities are easier to set up than lmsensors…

Sorry in previous post I meant to say that they have windows utilities that are easier to install than lmsensors that make it trivial in windows to have your pc shut down or warn you if you can’t navigate your systems bios